{
    "tender_id": 5206767,
    "check": {
        "ok": true,
        "versions": 4,
        "broken_at": null
    },
    "formula": "content_hash = sha256(content); hash = sha256(prev_hash + \"\\n\" + tender_id + \"\\n\" + version + \"\\n\" + recorded_at + \"\\n\" + content_hash [+ \"\\n\" + actor, when the version has one])",
    "versions": [
        {
            "version": 1,
            "recorded_at": "2026-11-04T14:49:54Z",
            "content": "{\"cpv\": \"39162100\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3a7c-2793-0f2a-e2d6-6b000120f017\", \"buyer\": \"Miasto Poznań Poznański Zespół Żłobków\", \"title\": \"Zakup pomocy dydaktycznych dla Poznańskiego Zespołu Żłobków\", \"region\": \"wielkopolskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Poznań, wielkopolskie\", \"source_id\": \"2026/BZP 00522920/01\", \"deadline_at\": \"2026-11-13T08:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-04T14:01:42Z\", \"notice_number\": \"2026/BZP 00522920/01\"}",
            "content_hash": "1d612fde2feb7972fc0dd5de8b620e053394f66947b1f21e4e6bc2daa35ee9bd",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "93c85d63dd390807fd74e4a8798ee118101f7bb2896cbe5ce10c417dd3f8289e",
            "actor": null,
            "seal": {
                "id": 12,
                "digest": "e23c0f5a7e440e937f514487a150dc1be40887f39a941304e364e5e94a4b77fc",
                "file": "https://tenderiq.pl/rejestr/pieczec-12.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-12.txt.ots",
                "bitcoin_block": 974604
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-04T15:53:42Z",
            "content": "{\"cpv\": \"39162100\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3a7c-2793-0f2a-e2d6-6b000120f017\", \"buyer\": \"Miasto Poznań Poznański Zespół Żłobków\", \"title\": \"Zakup pomocy dydaktycznych dla Poznańskiego Zespołu Żłobków\", \"region\": \"wielkopolskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Poznań, wielkopolskie\", \"buyer_nip\": \"2090001440\", \"source_id\": \"2026/BZP 00522920/01\", \"deadline_at\": \"2026-11-13T08:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-04T14:01:42Z\", \"notice_number\": \"2026/BZP 00522920/01\"}",
            "content_hash": "5e36bfb125c87a317780dc48ea4049bee1af100c2eb79c5f38e2833f02627f97",
            "prev_hash": "93c85d63dd390807fd74e4a8798ee118101f7bb2896cbe5ce10c417dd3f8289e",
            "hash": "705099670fce9cc32b69175aa9769f56956799dac4d37c89f95ff0c65681688f",
            "actor": null,
            "seal": {
                "id": 12,
                "digest": "e23c0f5a7e440e937f514487a150dc1be40887f39a941304e364e5e94a4b77fc",
                "file": "https://tenderiq.pl/rejestr/pieczec-12.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-12.txt.ots",
                "bitcoin_block": 974604
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-11-04T16:45:45Z",
            "content": "{\"cpv\": \"39162100\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3a7c-2793-0f2a-e2d6-6b000120f017\", \"buyer\": \"Miasto Poznań Poznański Zespół Żłobków\", \"title\": \"Zakup pomocy dydaktycznych dla Poznańskiego Zespołu Żłobków\", \"region\": \"wielkopolskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Poznań, wielkopolskie\", \"buyer_nip\": \"2090001440\", \"source_id\": \"2026/BZP 00522920/01\", \"deadline_at\": \"2026-11-13T08:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-04T14:01:42Z\", \"notice_number\": \"2026/BZP 00522920/01\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3a7c-2793-0f2a-e2d6-6b000120f017\"}",
            "content_hash": "bdb5e0a816e89200abbfb941cd09faaf8e4ba6e82caffe1c2bde9f5dc178569b",
            "prev_hash": "705099670fce9cc32b69175aa9769f56956799dac4d37c89f95ff0c65681688f",
            "hash": "2b38f23c50d1b8e9ae098692d53a1a3d4d611e5408a4708b386d97533f604511",
            "actor": null,
            "seal": {
                "id": 12,
                "digest": "e23c0f5a7e440e937f514487a150dc1be40887f39a941304e364e5e94a4b77fc",
                "file": "https://tenderiq.pl/rejestr/pieczec-12.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-12.txt.ots",
                "bitcoin_block": 974604
            }
        },
        {
            "version": 4,
            "recorded_at": "2026-11-04T20:45:28Z",
            "content": "{\"cpv\": \"39162100\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3a7c-2793-0f2a-e2d6-6b000120f017\", \"buyer\": \"Miasto Poznań Poznański Zespół Żłobków\", \"title\": \"Zakup pomocy dydaktycznych dla Poznańskiego Zespołu Żłobków\", \"region\": \"wielkopolskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Poznań, wielkopolskie\", \"buyer_nip\": \"2090001440\", \"source_id\": \"2026/BZP 00522920/01\", \"deadline_at\": \"2026-11-13T08:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-04T14:01:42Z\", \"notice_number\": \"2026/BZP 00522920/01\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1389463\"}",
            "content_hash": "aca07c7ada13d1ec9f7a10559b281b82b6a9de8b6d7644d6ae6ead68c6f06296",
            "prev_hash": "2b38f23c50d1b8e9ae098692d53a1a3d4d611e5408a4708b386d97533f604511",
            "hash": "45f55312defab13fba6e062e2daa2b6ca887e2f20f2f183524c4d1b1ac15dd88",
            "actor": null,
            "seal": {
                "id": 12,
                "digest": "e23c0f5a7e440e937f514487a150dc1be40887f39a941304e364e5e94a4b77fc",
                "file": "https://tenderiq.pl/rejestr/pieczec-12.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-12.txt.ots",
                "bitcoin_block": 974604
            }
        }
    ]
}